Air heater



Jan, 13, 1925. 1,523,247

P. J. H. BERNARD AIR HEATER Filed Aug. 24, 1922 2 sheets-sheet 5 @H l a@ @ttozmq Jan, 13. 1925.4 1,523,247

P. J. H. BERNARD AIR HEATER Filed Aug. 24, 1922 2 Sheets-Sheet 2 66 6 59 Patented Jan. 13, 1925.

U N l'TED S T ATE S PIERRE JOSEPH HENRI BERNARD, OF MONTREAL, QUEBEC, CANADA.

AIR HEATER.

Application filed 'August 24, 1922. `Serial No. 584,064.

To all 'whom t may concern Be it known that I, PIERRE .l'osnri-r HENRI BnRNaun,-a subject o't the King of Great Britain, residing at Montreal, Province of Quebec, Canada, have invented certain new and useful Improvements in Air Heaters; and l do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The Vpresent invention relate` zo new and useful improvements in an air heater and has tor one 'of its objects the provision o'i' a device which may be heated by gas, oil, or electricity, it is an improvement over my Vformer Canadian Patent No; 216,324.

Among the princiliial objects or' the invention is the provision otl a radiator, oi' the type referred to in which the use ot' only .a cinnparatively small amount `ot water 1s necessary. lin connection with such a radiator the invention contemplates the use of a specially designed head by means of which an eiiicient circulation of water throughout the radiator is established, such head being simple 'in vrits structure and operation.

notherobject oi' this invention is to provide a device of the character described, by which the heating element is completelyenclosedpermitting the cireulationof air only irom the bottom to the top, no air being admitted in contact with the heating surface by the sid-es; thus, the cooler air being generally on the floor is admitted by the bottom and heated through the device, and iinally exhausted through its upper part, thus insuring an even temperature all over the room.

A further object of this invention is to obtain a device of the character described, provided with appropriate means for preventing the water reservoir from being heated by the heat generated by the apparatus, thus preventing the evaporation of the water contained therein.

Other objects and advantages of the invention will be apparent as the description continues, while others will be definitely pointed out.

The invention is fully disclosed in the following description and in the accompany ing drawings in which:

Figure 1 is a rear perspective view of the device, showing the rear wall open to disclose the interior;

Figure 2 is a front elevation,

Figure l is a side elevation of the interior ot' the. device heated by gas, the casing being iii-section, this view corresponding to Figure 1;

Figure 1 vis a similar view ot the device heated by electricity;

Figure 5 is a-section through the header at a corner oi" the radiator; and

Figure (i is a vragmentary perspective detail view of the header.

`Referring to the various views by corresponding reference characters throughout, und,particularly to Figure l, the trame'or body otl the device consists of a box like member 1 mounted on a sot ot legs 2. A perforated'cover 23 is superposed on thebody and is desic'ned in any desired manner to zender the device ot attractive appearance. it the end a closure i is hinged for obtaining accessto the burner and heater'.

A pl ality oi props 5 aremounted on the base oi the body and serve to support a radiator is will be seenV trom Figure 1, this radiator coniprises a plurality ot box like structures T, prei'erably rectangular', supported in Vparallelism and spaced irom one another on Ithe props 5. Communication is established among these various sections or chambers by `vmeans `oi headers fixed at the corners'thereoii. Eachrheaderincludes a .substantially U-shaped member 11 (Figure closed at its open side by a cap 12, thus forming a sleeve like structure which is substantially square `or rectangular in cross section. In one'edge ot this device is `formed a plurality ot' not-ches llin which the corners of the sections 'i' rare received. The corners oi' the sections A'i' yare cut away, as at la (Figure in order to establish communication with the headers, the edges ot the cut away portions being soldered or otherwise connected to the headers to insure against leal;- age.

At the. lower corner of the frame (Figure 1) supported an oil burner 16 whic is regulable by means oi' the screw 17. This burner is supplied from a reservoir 18 mount-ed at one end of the device and provided with the usual tank 19. A supply pipe 20 leads from the tank 19 to the burner and is provided with a cut-ofi valve 21.

Above the burner is supported a hood or covering member 22 in which is supported a circulatimi water heater 22 shown in Figure f3. This heater comprises a dome 22 which is sustained within the hood 22 by means of the water outlet pipe 24 passing through the upper portions of both members. Y

The lower header 32 of the radiator is `placed in communication with the Water heater by means of a pipe 33 extending into the heater 22. The water upon being heated circulates through the heater and finally ascends through the pipe 24, from which a pipe 34 leads to one of the upper headers 35 ot'the radiator.

At the top ot the frame and above the pipe 34 is supported a Water reservoir or supply tank e6. The upper header 3T of the radiator, which is opposite the header 35 communicates with the .reservoir bymea-ns of a return pipe 38. A condenser f 39 is interposed between this return pipe Y upper portion of the radiator.

and the reservoir. A water supplyT pipe 40 connects the lower portion of the reservoir with the heater 22 through a connection 4l. The lower end of the supply pipe is litte'd with a cock 42 for draining the system. The course ot circulation is as folf" lows: The water first enters the heater throughthe supply pipe 40, and is then caused to rise through the pipe 34 into the Because of the large exposed surface of this radiator, the heat of the Water is dissipated into the i surrounding atmosphere as 'the result ot which the water cools and condenses, as shownvby the arrows in Figure 3.1 'Finally it reaches the'lower header 32 and thence returns to the Water heater through the short pipe 83. formed in the radiator because ol excessive heating or other reasons rises through the pipe 38 and passes to the condenser 59, lbeingreturned from the latter to the reser-A voir for further circulation through the system. v

A heater adapted for use with an electric element is shown in Figure 4. In this instance, thehood 22 at a point 43 is pro-V vided with a Vbracket 44, for supporting an electric element 45. The electrical connec- Anyk steam that may be In view ot insuring the safety of the de-V vice, when heated by means otl oil, the oil reservoir 18 is located exteriorly of the opposite side vof the burner, this reservoir is also provided with a glass gauge 69, so at any time the amount ot' oil 1n saidrreservoir can be easily seen. It should be also noted that in order to help the combustion ot the oil or gas and secure the proper draft, the side of the radiator adjacent the burner is provided at its lower portion with apertures 17 which may be closed or opened at will by means ot a conventional shutter (not shown). v

lVhile specific Vembodiments of the invention have been illustrated and described, it

is to be understood that various alterations in the details of construction may be Ymade without depart-ing from the spirit of the invention as indicated Yby the appended claim.

Having thus fully described the invention, what I claim as new and desire to protect by Letters Patent is:- Y i Y A radiator including Va plurality of hollow rectangular sections arranged in spaced relation, headers arranged at the Vvertices of said sections for placing the sections in communication with Vthe headers,- said headers being notched for the reception of the sections, said sections being cut away at the portions received within said headers.

In witness whereof I have hereunto set my hand.

PERRE JOSEPH HENI BERNARD. 

